Final answer:
The spine is stabilized by the deep muscles surrounding it and the contraction of the abdominal muscles, including the obliques, transversus abdominis, and rectus abdominis. Option 3 is correct..
Step-by-step explanation:
The spine is stabilized by two factors: the contraction of the supporting deep muscles surrounding the spine, and the contraction of the abdominal muscles. The abdominal muscles consist of four pairs that cover the anterior and lateral abdominal region: the external obliques, the internal obliques, the transversus abdominis, and the rectus abdominis. They play a crucial role in maintaining posture and balance, working together with the deep muscles of the spine to support and stabilize the vertebral column.
The spine is stabilized by two factors: the contraction of the supporting deep muscles surrounding the spine, and the contraction of the abdominal muscles. The deep muscles of the core of the body help maintain posture by providing stability and support to the spine. The abdominal muscles, including the rectus abdominis, external obliques, internal obliques, and transversus abdominis, work together to stabilize the spine during movement and maintain proper posture.